Sony late on Monday announced it has added four new earbud headphones to its EX series, with the flagship MDR-EX500LP and MDR-EX300LP headphones as well as the lowest-cost EX earbuds to date, the MDR-EX33LP and MDR-EX35LP. All ship with three removable hybrid silicone rubber tips in three sizes to allow users to fit the earbuds into their ear canals. These work together with a more rigid internal
